EXHAUST GAS PURIFYING CATALYST
This invention relates to a catalyst for exhaust gas purification, including a substrate, a coat layer comprised of a porous support body formed on the substrate, and a noble metal supported on the coat layer. In the coat layer, pore volume of pore having pore diameter 0.1 to 20 mu m occupies 50 % o...
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng ; fre ; ger |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | MATSUNAGA, SHINICHI SUDA, AKIHIKO SAIKI, MOTOHISA TSUJI, RYUSUKE |
| description | This invention relates to a catalyst for exhaust gas purification, including a substrate, a coat layer comprised of a porous support body formed on the substrate, and a noble metal supported on the coat layer. In the coat layer, pore volume of pore having pore diameter 0.1 to 20 mu m occupies 50 % or more, and pore volume of pore having pore diameter 0.5 to 10 mu m occupies 20 % or more, respectively of a pore volume of pore having pore diameter 50 mu m or less. The pore diameter of the coat layer is 10 to 2000 times that of the conventional coat layer. Gas diffuse speed in the pore of the present invention is 10 to 2000 times that of the conventional pore. On account of the noble metal supported at the inner part of the coat layer, particle growth of the noble metal is prevented, and utilize efficiency of the NOx storing material at the inner part is increased. Both increasing of NOx storing amount in the lean condition under oxygen excessive atmosphere, and reducing and purifying of NOx of high efficiency by the short time rich-spike can be realized. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP1364706A4</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP1364706A4</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP1364706A43</originalsourceid><addsrcrecordid>eNrjZJBzjfBwDA0OUXB3DFYICA3ydIv09HNXcHYMcfSJDA7hYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgGGxmYm5gZmjibGRCgBAIWgISg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>EXHAUST GAS PURIFYING CATALYST</title><source>esp@cenet</source><creator>MATSUNAGA, SHINICHI ; SUDA, AKIHIKO ; SAIKI, MOTOHISA ; TSUJI, RYUSUKE</creator><creatorcontrib>MATSUNAGA, SHINICHI ; SUDA, AKIHIKO ; SAIKI, MOTOHISA ; TSUJI, RYUSUKE</creatorcontrib><description>This invention relates to a catalyst for exhaust gas purification, including a substrate, a coat layer comprised of a porous support body formed on the substrate, and a noble metal supported on the coat layer. In the coat layer, pore volume of pore having pore diameter 0.1 to 20 mu m occupies 50 % or more, and pore volume of pore having pore diameter 0.5 to 10 mu m occupies 20 % or more, respectively of a pore volume of pore having pore diameter 50 mu m or less. The pore diameter of the coat layer is 10 to 2000 times that of the conventional coat layer. Gas diffuse speed in the pore of the present invention is 10 to 2000 times that of the conventional pore. On account of the noble metal supported at the inner part of the coat layer, particle growth of the noble metal is prevented, and utilize efficiency of the NOx storing material at the inner part is increased. Both increasing of NOx storing amount in the lean condition under oxygen excessive atmosphere, and reducing and purifying of NOx of high efficiency by the short time rich-spike can be realized.</description><edition>7</edition><language>eng ; fre ; ger</language><subject>BLASTING ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; ENGINE PLANTS IN GENERAL ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL ; HEATING ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; STEAM ENGINES ; THEIR RELEVANT APPARATUS ; TRANSPORTING ; WEAPONS</subject><creationdate>2005</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20050824&DB=EPODOC&CC=EP&NR=1364706A4$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20050824&DB=EPODOC&CC=EP&NR=1364706A4$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MATSUNAGA, SHINICHI</creatorcontrib><creatorcontrib>SUDA, AKIHIKO</creatorcontrib><creatorcontrib>SAIKI, MOTOHISA</creatorcontrib><creatorcontrib>TSUJI, RYUSUKE</creatorcontrib><title>EXHAUST GAS PURIFYING CATALYST</title><description>This invention relates to a catalyst for exhaust gas purification, including a substrate, a coat layer comprised of a porous support body formed on the substrate, and a noble metal supported on the coat layer. In the coat layer, pore volume of pore having pore diameter 0.1 to 20 mu m occupies 50 % or more, and pore volume of pore having pore diameter 0.5 to 10 mu m occupies 20 % or more, respectively of a pore volume of pore having pore diameter 50 mu m or less. The pore diameter of the coat layer is 10 to 2000 times that of the conventional coat layer. Gas diffuse speed in the pore of the present invention is 10 to 2000 times that of the conventional pore. On account of the noble metal supported at the inner part of the coat layer, particle growth of the noble metal is prevented, and utilize efficiency of the NOx storing material at the inner part is increased. Both increasing of NOx storing amount in the lean condition under oxygen excessive atmosphere, and reducing and purifying of NOx of high efficiency by the short time rich-spike can be realized.</description><subject>BLASTING</subject><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES</subject><subject>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>STEAM ENGINES</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2005</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJBzjfBwDA0OUXB3DFYICA3ydIv09HNXcHYMcfSJDA7hYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgGGxmYm5gZmjibGRCgBAIWgISg</recordid><startdate>20050824</startdate><enddate>20050824</enddate><creator>MATSUNAGA, SHINICHI</creator><creator>SUDA, AKIHIKO</creator><creator>SAIKI, MOTOHISA</creator><creator>TSUJI, RYUSUKE</creator><scope>EVB</scope></search><sort><creationdate>20050824</creationdate><title>EXHAUST GAS PURIFYING CATALYST</title><author>MATSUNAGA, SHINICHI ; SUDA, AKIHIKO ; SAIKI, MOTOHISA ; TSUJI, RYUSUKE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1364706A43</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2005</creationdate><topic>BLASTING</topic><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES</topic><topic>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>STEAM ENGINES</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>MATSUNAGA, SHINICHI</creatorcontrib><creatorcontrib>SUDA, AKIHIKO</creatorcontrib><creatorcontrib>SAIKI, MOTOHISA</creatorcontrib><creatorcontrib>TSUJI, RYUSUKE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MATSUNAGA, SHINICHI</au><au>SUDA, AKIHIKO</au><au>SAIKI, MOTOHISA</au><au>TSUJI, RYUSUKE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>EXHAUST GAS PURIFYING CATALYST</title><date>2005-08-24</date><risdate>2005</risdate><abstract>This invention relates to a catalyst for exhaust gas purification, including a substrate, a coat layer comprised of a porous support body formed on the substrate, and a noble metal supported on the coat layer. In the coat layer, pore volume of pore having pore diameter 0.1 to 20 mu m occupies 50 % or more, and pore volume of pore having pore diameter 0.5 to 10 mu m occupies 20 % or more, respectively of a pore volume of pore having pore diameter 50 mu m or less. The pore diameter of the coat layer is 10 to 2000 times that of the conventional coat layer. Gas diffuse speed in the pore of the present invention is 10 to 2000 times that of the conventional pore. On account of the noble metal supported at the inner part of the coat layer, particle growth of the noble metal is prevented, and utilize efficiency of the NOx storing material at the inner part is increased. Both increasing of NOx storing amount in the lean condition under oxygen excessive atmosphere, and reducing and purifying of NOx of high efficiency by the short time rich-spike can be realized.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP1364706A4 |
| source | esp@cenet |
| subjects | BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS |
| title | EXHAUST GAS PURIFYING CATALYST |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-29T23%3A33%3A45IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=MATSUNAGA,%20SHINICHI&rft.date=2005-08-24&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EEP1364706A4%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |